Hi. So My period started on May 23 and ended May 28 or 29. On Saturday June 2 around 9 pm, my boyfriend and I were messing around and we tried to have sex for the first time. He inserted his penis, but it didnt go in all the way. Finally he got it in All the way and pulled out a few seconds later because we thought it wasnt a good idea. Im not sure if there was any precum :/ but He was no where near to ejaculating. We didn't use a condom and I am not on birth control. However, probably aboutt 2 hours before we had sex, he ejaculated. I was so worried about pregnancy so I took the plan B onestep pill a little less that 48 hours after we had sex. I'm still so worried and stressed about it, I tell myself I'm not pregnant but could I be? Please help me :/ thanks..